Add network config parsing to bhyveucl.
Fix merge conflicts
Merge pull request #10 from xmj/master

Add network config parsing to bhyveucl.
Contributed by: xmj
Only destroy interfaces that are actually present.

It can be that any type (bridges, taps, vlans) are left unconfigured.
Find out what is effectively present, and only iterate over these.
Typos
Merge pull request #11 from xmj/master

Only destroy interfaces that are actually present.
Contributed By: xmj
Simplify parsing loader_*

Note: This is a backwards incompatible change, update your configs